Example 16 A school team won 6 games this year against 4 games won last year. What is the per cent increase?
Number of games won this year = 6
Number of games won last year = 4
Increase in number of games won = 6 − 4
= 2
Percentage increase = (𝐼𝑛𝑐𝑟𝑒𝑎𝑠𝑒 𝑖𝑛 𝑛𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑔𝑎𝑚𝑒𝑠 𝑤𝑜𝑛)/(𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑔𝑎𝑚𝑒𝑠 𝑤𝑜𝑛 𝑙𝑎𝑠𝑡 𝑦𝑒𝑎𝑟) × 100%
= 2/4 × 100%
= 1/2 × 100%
= 50%